BIRUGEAR Blue LED 2-Port USB Home Wall Travel AC Charger Power Adapter - Black for BLU Vivo Air Brand new BIRUGEAR charger. Input: 100V - 240V (U.S. & World Standard).&lt; Blue LED light power indicator. Intelligent IC chip inside recognizes a fully charged battery and automatically switches to a saver mode to prevent overcharging and short circuit. You must have a USB charging cable (sold separately) in order to charge your device with this charger.